Across
- 6. this organ filters your blood
- 9. having to do with the brain and nerves
- 10. for a particular purpose
- 12. these take oxygen from the air and put it in the blood
- 13. having to do with your blood moving around
- 16. the smallest blood vessel
- 17. this type of cell "feels"
- 18. groups of cells
- 19. "road" away from the heart
Down
- 1. A group of tissue that has a special function
- 2. having to do with the heart
- 3. the breathing muscle
- 4. like tiny fingers
- 5. "road" to the heart
- 7. a shell, or carapace for example
- 8. big tubes to your lungs
- 11. food tube
- 14. having to do with breathing
- 15. the power tissue